New York [U.S.A], Feb 13 : Social media giant Facebook will begin allowing news publishers to run paywalls inside the iOS app from March 1. According to TechCrunch, Facebook's head of news partnerships Campbell Brown said that publishers wanted to give away five free articles, not ten, so Facebook is switching to that lower threshold before asking users to pay, and that includes bringing the test to iOS. "We're working now on a subscription product that we're moving forward with on iOS on March 1st, which is a breakthrough.